.calendar {
	width: 90%;
	max-width: 1200px;
	margin: 20px auto;
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 9px;
	padding: 10px;
	background-color: #fff;
	font-size: 0.8em;
	border: 1px solid #ddd;
	box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.month {
	border: 1px solid #ddd;
	box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.month-title {
	text-align: center;
	font-size: 1.5em;
	margin-bottom: 10px;
	padding: 8px;
	background-color: #e9e9e9;
	border-bottom: 1px solid #ccc;
}
.calendar table {
	width: 100%;
	border-collapse: collapse;
}
.calendar th {
	background-color: #0080c9;
	color: #fff;
	padding: 5px;
}
.calendar td {
	width: 14.28%;
	height: 30px;
	font-family: monospace;
	text-align: center;
	vertical-align: middle;
	font-size: 1.2em;
	border: 1px solid #ddd;
}
.hatched {
	background-image: repeating-linear-gradient(45deg, #ffcccc, #ffcccc 3px, transparent 3px, transparent 7px);
	color: #949494;
}